Quantum noise in the spin transfer torque effect
arXiv:1904.12372 · doi:10.1103/PhysRevB.100.184418
Abstract
Describing the microscopic details of the interaction of magnets and spin-polarized currents is key to achieve control of such systems at the microscopic level. Here we discuss a description based on the Keldysh technique, casting the problem in the language of open quantum systems. We reveal the origin of noise in the presence of both field-like and damping like terms in the equation of motion arising from spin conductance.
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